I don’t see DeGruy’s name as an author on any articles in PubMed, so it doesn’t appear that she is directly involved in any research on possible epigenetic factors underlying PTSS (unless it’s published in a non-biological journal, which would be odd for a genetics study).

I’m not qualified to evaluate effects in other areas (cultural, etc.). It would be hard to imagine that there aren’t lingering cultural effects, given that human cultures and subcultures frequently seem to persist for centuries.

Getting funding to study the epigenetics may be a challenge. It’s always a challenge to get funding. It’s also not clear to me that we’re quite ready to do such a study; we probably need a bit more groundwork laid for understanding epigenetic changes in humans in general so we even know what to look at.

Until someone writes a good grant proposal, it’s hard to know whether the “hot topic” effect (helpful) or the “but what if it shows” effect (unhelpful, probably) would be more potent. People on study sections (who approve funding for grants) tend to be at universities, and people in universities tend along with their students to be rather left-leaning, so I wouldn’t take it as a given that funding would be denied because of some sort of defensive white patriarchy thing. Certainly possible, but far from certain these days.